Diff fitted..... WOW

[Adam Moran]

Hello All,

Fitted my new CR gear box and Diff over the weekend, if you dont have a diff and you like to DRIVE your car then you have to have one! Best thing money can buy.

I look forward to corners now lol just put your foot down and it sticks to the road like your on a track.

Cant wait to get it on the track now :lol:

Ad

[karl Rowntree]

Nice one adam, you will have to take me out in it when you are up again. I loved your car when i took it down the strip, can only imagine how it would go now round a nice twisty track!

Got to get me one of these diff things :wink:

How come we didnt see you on saturday?

[scott.parker]

[quote="karl Rowntree"]

Got to get me one of these diff things :wink:

Yep same here.. :D but i need one before i kill tomany tyres,lol

Sounds really good Adam,do you notice it pull harder into the corner now/less under steer ect?

scott

[peester]

what sort of power on a 1.6 8v would you rekon a diff would be helpful..? need big carbs/turbo/t.b's etc..? just reduces wheelspin?

[NovaNeil]

Glad your enjoying it mate, just remember.... That diff is used to some proper Turbo Power, so you best get that Mega lumpy CAM in to try and get somewhere near :lol: .

And lol.... it was a bargain. Can't believe I sold it now, but desperate times call for desperate measures.

The Quaiffe ATB Diff is more about cornering than reducing striaght line wheel spin to be honest. Round a track they are fantastic, but on the road they are equally at home. To be honest you don't need mega power to justify one, just enough to ensure the revs build up quickly when you plant your foot when exiting a corner.

If you really know how to use it, I reckon most cars would benefit from one.

Neil

[scott.parker]

Well this say's it all really.. :oops:


http://img.photobucket.com/albums/v12/novaneil/Smokin.jpg

I need one asap.. :D

scott

[Philsutton]

^^ i have to say ive done the same in mine, come out a corner an planted the pedal only to see smoke pouring down the side of the car :lol:

[Dar]

The Quaife ATB LSD was the best mod I fitted. They are brilliant!
4.5 seconds improvement on my lap times in one single stroke.

Word of warning though. I havent done this myself but apparently they arn't really good for rally use. The reason is that they snatch when one wheel leaves the ground. This is OK normally but when rallying i've heard that you will kill the transmission quickly becuase wheels are constantly leaving the gound.

Perfect for trackday use though. :twisted:

[nova---chris]

Great investment atb diff.
I had mine for a while now and coupled with the sccr f16 it makes a great weapon. Its highly reccomended you change the final drive to .
Top ends are not really that importand.

I still get about 130mph outta mine at 8k in 5th lol. all good fun.
it does help straight line get aways. But as stated best on the corners.

Tbh i dont think the unequal drive shafts on a nova help alot.
Equal shafts would be a godsend with a atb in my book.
Tendancy is normally to snatch to the left i find. ahh well i can live with that.

nice one anyhow mate and good luck with things:) happy racing!

[Adam Moran]

did'nt come Saturday Karl as i thought there was no spectators but i understand there was now :roll:

the gear box makes a difference with the diff because it's super close, like 5k @ 80mph lol

[karl Rowntree]

I know adam, was abit mad about that. I didnt take the evo as i thought they might be a bit funny taking more than one car. Oh well maybe next time, get joined and get on the track.

Chris, funny you should mention equal lenght shafts, i am currently talking to a company with my dad about making kits up for novas. Do you think it would be a real advantage combined with a diff?

Sorry adam dont mean to change subject, Trying to keep it all on topic.

Karl

[nova---chris]

I find it hard to see how a true equal shaft setup could be done.
Mainly due how the current gearbox and engine are mounted.

A collar could be made so you can use a equal length shaft i suppose.
Dunno if it that would be a true equal setup tho.

as for it being an advantage i would think so to be honest.
the stresses have gotta be different from side to side. An equal setup would surely make the car handle better in most aspects.
Just my personal view to be honest. alot may not agree.

One day maybe we will find out if it does :lol:

[CP]

Just for those looking to buy soon - hang fire a bit. Some first hand info from members from the site on plate vs atb diffs should be available fairly soon. Might suit some better not to have atbs. As said previously they do shuttle the drive back and forth across the front of the car quite violently in poor/variable traction conditions

[karl Rowntree]

I had planned to use part of the setup off a calibra/cavalier etc, using the standard collar and having a set of shafts made up to fit the standard track of a nova. Just an idea at the mo after speaking to the guys today.

Look forward to hearing the pros and cons of both diff types cp as i am still learing about them.

Karl

[broody]

What is a 'diff'?

[NovaNeil]

Thats what im having done at the Moment Karl for my XE... I've got the Collar that runs equal length shafts on some Cavs. And a mate of mine is getting some custom shafts made up for me. So i'll let you all know when it happens. Won't be till late November though... as there costing a few hundred pounds.

Neil

[Nick]

not thtat im n expert but a diff is a differential.

i remember a post by some lad who said " i was pissing about by driving one of my front wheels onto a plastic sheet with soap and water on it and pissing around ! But only the 1 wheel turned (the wheel that was on the sheet) the otherside stood still , is it my knackered driveshafts?"

that is exactly what a car with a Full slip? differential does, i.e no diff, i.e a Nova. The drive to the wheels is biased towards the wheel with less resistance. That's the way i understood it.

A LSD (limited slip differential) goes against biasing the drive to the wheel with less resistance and trys to equally balance the drive between the two. Therefor you get better overall traction round corners and less wheelspin when booting it from standstill.

i dunno if that's right ? but i think it's the basics ?

please correct me if i'm wrong.

[Dan]

ok breif description,

With an ordinary open differential, standard on most cars, a lot of precious power is wasted during wheel spin under acceleration and around corners. This happens because the open differential shifts power to the wheel with less grip, along the path of least resistance.

On cornering etc the atb diff (quaife) senses which wheel has better grip, and biases the power to that wheel reducing inside-wheel spin.

With a plate diff as a wheel looses grip a series of little diff plates allow a limit of slip, once this happens the plates bind and grip each other, thus allowing equal drive to both wheels rather than the atb item which uses helical worm gears to shift the drive from side to side rather than locking both equally.

As said that was very breif and in the near future i shall be fitting a gripper plate diff which i have just purchased, and myself and CP will do a report on how his quaife and my gripper compare and what we feel the differences and benefits are for both makes etc

[Nick]

Cool, so i was kinda right ? but not exactly spot on !

Wehay !

[fearless]

Karl - you must have too much money - thinking of having driveshafts special fabricated - put you money back in your pocket and have a ponder about this :idea:

A lot of lads around me use modified cavalier/astra/calibra shafts when converting novas/corsas to C20XE/C20LET with no problems

Machine the cavalier/astra/calibra shaft down to the required length (Can't remember the measurement off the top of my head) then machine an extra groove (which the cv joint clips into) in the outer spline of the shaft - then sliding the outer cv joint over the first groove so it locates into the newly machined second groove - hey presto - heavy duty shafts - never seen one snap yet !

I don't see why this method can't work on a two piece shaft !!!

What do you think !!!!

Dave

[Nick]

You wanna build me an engine !?

i'm having trouble finding someone up for the job !

[pornstarr]

ok breif description,

With an ordinary open differential, standard on most cars, a lot of precious power is wasted during wheel spin under acceleration and around corners. This happens because the open differential shifts power to the wheel with less grip, along the path of least resistance.

On cornering etc the atb diff (quaife) senses which wheel has better grip, and biases the power to that wheel reducing inside-wheel spin.

With a plate diff as a wheel looses grip a series of little diff plates allow a limit of slip, once this happens the plates bind and grip each other, thus allowing equal drive to both wheels rather than the atb item which uses helical worm gears to shift the drive from side to side rather than locking both equally.

As said that was very breif and in the near future i shall be fitting a gripper plate diff which i have just purchased, and myself and CP will do a report on how his quaife and my gripper compare and what we feel the differences and benefits are for both makes etc
^^^^
Listen to that man....he knows the score!

And shit me does his car go well! :D

[novashed]

earless, does that mean then that the use of the standard nova wheel bearings is not possible as the outer CV's on astras cavs etc are bigger, would have to revert to say VR6 or grp A bearings?